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The global energy sector from a subsurface perspective

Geology & Geophysics

Strike-slip kinematics for pop-ups and pull-aparts

Molly Turko - Devon Energy
Pop-ups and pull-aparts, re­leasing- and restraining-bends, positive- and negative-flower structures. These are the vari­ous names given to the little, and big, structures that develop along strike-slip faults. They often form…

Oman – beneath the surface

Madeleine Slatford, NVentures
Much has been written, including in this mag­azine, about the fan­tastic outcrop geology of Oman, the wonderful exposure, the preservation of salt at surface in the arid climate, and the…

Uncertainty – the most important result of basin modelling

David Rajmon, Consulting Geologist
I have long wanted to write about uncertainties in basin modelling. Despite their general acknowledgement, they are commonly underestimated due to various biases and psychological pressures. Explorationists sometimes live in…

The cream of the outcrop

Arndt Peterhänsel and Maggie Murison - TRACS Training
This panorama shows an Upper Miocene succession, la Rambla de Lanujar, in the Betic Cordillera, featuring in one of our field trips to Tabernas, Almería, Spain. Apart from being a…

Peat: So hot right now

Henk Kombrink
“The offshore wind sector is still very much a geotechnical exercise”, I was told recently by someone with knowledge on the matter. “But that model is due an update.” Despite…

Riedel shears as kinematic indicators

Molly Turko - Devon Energy
In the previous article in this series, we discussed that Riedel shears are commonly the first set of subsidiary faults we see prior to the breakthrough of a master fault.…

The rise of production geology

Raffik Lazar, GeomodL International
Before anything, let’s clear the water: Production geology is not a cross-over between the cinema industry and our good ol’ geology. Production geology refers to unravelling the geological intricacies in…

Using seismic velocity to derisk oil exploration

Martin Essenfeld and Rafael Sandrea
In a recent GEO EXPRO article, we developed a field-based approach to identify natural gas prospects directly from seismic surveys. The gas fields are straight up. If the p-wave velocities…